Use the following guidelines when using FTP with flat file or XML sources and targets:
Specify the source or target output directory in the session properties. If you do not specify a directory, the Integration Service stages the file in the directory where the Integration Service runs on UNIX or in the Windows system directory.
You cannot run sessions concurrently if the sessions use the same FTP source file or target file located on a mainframe.
If you abort a workflow containing a session that stages an FTP source or target from a mainframe, you may need to wait for the connection to timeout before you can run the workflow again.
To run a session using an FTP connection for an SFTP server that requires public key authentication, the public key and private key files must be accessible on nodes where the session will run.